kwin/autotests/integration/transient_placement.cpp

/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.

Copyright (C) 2016 Martin Gräßlin <mgraesslin@kde.org>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*********************************************************************/
#include "kwin_wayland_test.h"
#include "platform.h"
#include "abstract_client.h"
#include "cursor.h"
#include "screenedge.h"
#include "screens.h"
#include "wayland_server.h"
#include "workspace.h"
#include "shell_client.h"
#include <kwineffects.h>

#include <KWayland/Client/connection_thread.h>
#include <KWayland/Client/compositor.h>
#include <KWayland/Client/event_queue.h>
#include <KWayland/Client/keyboard.h>
#include <KWayland/Client/registry.h>
#include <KWayland/Client/pointer.h>
#include <KWayland/Client/shell.h>
#include <KWayland/Client/seat.h>
#include <KWayland/Client/server_decoration.h>
#include <KWayland/Client/shm_pool.h>
#include <KWayland/Client/surface.h>
#include <KWayland/Client/touch.h>
#include <KWayland/Client/xdgshell.h>
#include <KWayland/Server/seat_interface.h>
#include <KWayland/Server/surface_interface.h>


namespace KWin
{

static const QString s_socketName = QStringLiteral("wayland_test_kwin_transient_placement-0");

class TransientPlacementTest : public QObject
{
    Q_OBJECT
private Q_SLOTS:
    void initTestCase();
    void init();
    void cleanup();
    void testSimplePosition_data();
    void testSimplePosition();
    void testDecorationPosition_data();
    void testDecorationPosition();
    void testXdgPopup_data();
    void testXdgPopup();

private:
    AbstractClient *showWlShellWindow(const QSize &size, bool decorated = false, KWayland::Client::Surface *parent = nullptr, const QPoint &offset = QPoint());

    KWayland::Client::Surface *surfaceForClient(AbstractClient *c) const;
};

void TransientPlacementTest::initTestCase()
{
    qRegisterMetaType<KWin::ShellClient*>();
    qRegisterMetaType<KWin::AbstractClient*>();
    QSignalSpy workspaceCreatedSpy(kwinApp(), &Application::workspaceCreated);
    QVERIFY(workspaceCreatedSpy.isValid());
    kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
    QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
    QVERIFY(waylandServer()->init(s_socketName.toLocal8Bit()));

    kwinApp()->start();
    QVERIFY(workspaceCreatedSpy.wait());
    QCOMPARE(screens()->count(), 2);
    QCOMPARE(screens()->geometry(0), QRect(0, 0, 1280, 1024));
    QCOMPARE(screens()->geometry(1), QRect(1280, 0, 1280, 1024));
    setenv("QT_QPA_PLATFORM", "wayland", true);
    waylandServer()->initWorkspace();
}

void TransientPlacementTest::init()
{
    QVERIFY(Test::setupWaylandConnection(Test::AdditionalWaylandInterface::Decoration));

    screens()->setCurrent(0);
    Cursor::setPos(QPoint(640, 512));
}

void TransientPlacementTest::cleanup()
{
    Test::destroyWaylandConnection();
}

AbstractClient *TransientPlacementTest::showWlShellWindow(const QSize &size, bool decorated, KWayland::Client::Surface *parent, const QPoint &offset)
{
    using namespace KWayland::Client;
#define VERIFY(statement) \
    if (!QTest::qVerify((statement), #statement, "", __FILE__, __LINE__))\
        return nullptr;
#define COMPARE(actual, expected) \
    if (!QTest::qCompare(actual, expected, #actual, #expected, __FILE__, __LINE__))\
        return nullptr;

    Surface *surface = Test::createSurface(Test::waylandCompositor());
    VERIFY(surface);
    ShellSurface *shellSurface = Test::createShellSurface(surface, surface);
    VERIFY(shellSurface);
    if (parent) {
        shellSurface->setTransient(parent, offset);
    }
    if (decorated) {
        auto deco = Test::waylandServerSideDecoration()->create(surface, surface);
        QSignalSpy decoSpy(deco, &ServerSideDecoration::modeChanged);
        VERIFY(decoSpy.isValid());
        VERIFY(decoSpy.wait());
        deco->requestMode(ServerSideDecoration::Mode::Server);
        VERIFY(decoSpy.wait());
        COMPARE(deco->mode(), ServerSideDecoration::Mode::Server);
    }
    // let's render
    auto c = Test::renderAndWaitForShown(surface, size, Qt::blue);

    VERIFY(c);
    COMPARE(workspace()->activeClient(), c);

#undef VERIFY
#undef COMPARE

    return c;
}

KWayland::Client::Surface *TransientPlacementTest::surfaceForClient(AbstractClient *c) const
{
    const auto &surfaces = KWayland::Client::Surface::all();
    auto it = std::find_if(surfaces.begin(), surfaces.end(), [c] (KWayland::Client::Surface *s) { return s->id() == c->surface()->id(); });
    if (it != surfaces.end()) {
        return *it;
    }
    return nullptr;
}

void TransientPlacementTest::testSimplePosition_data()
{
    QTest::addColumn<QSize>("parentSize");
    QTest::addColumn<QPoint>("parentPosition");
    QTest::addColumn<QSize>("transientSize");
    QTest::addColumn<QPoint>("transientOffset");
    QTest::addColumn<QRect>("expectedGeometry");

    QTest::newRow("0/0") << QSize(640, 512) << QPoint(0, 0) << QSize(10, 100) << QPoint(0, 0) << QRect(0, 0, 10, 100);
    QTest::newRow("bottomRight") << QSize(640, 512) << QPoint(0, 0) << QSize(10, 100) << QPoint(639, 511) << QRect(639, 511, 10, 100);
    QTest::newRow("offset") << QSize(640, 512) << QPoint(200, 300) << QSize(100, 10) << QPoint(320, 256) << QRect(520, 556, 100, 10);
    QTest::newRow("right border") << QSize(1280, 1024) << QPoint(0, 0) << QSize(10, 100) << QPoint(1279, 50) << QRect(1270, 50, 10, 100);
    QTest::newRow("bottom border") << QSize(1280, 1024) << QPoint(0, 0) << QSize(10, 100) << QPoint(512, 1020) << QRect(512, 924, 10, 100);
    QTest::newRow("bottom right") << QSize(1280, 1024) << QPoint(0, 0) << QSize(10, 100) << QPoint(1279, 1020) << QRect(1270, 924, 10, 100);
    QTest::newRow("top border") << QSize(1280, 1024) << QPoint(0, -100) << QSize(10, 100) << QPoint(512, 50) << QRect(512, 0, 10, 100);
    QTest::newRow("left border") << QSize(1280, 1024) << QPoint(-100, 0) << QSize(100, 10) << QPoint(50, 512) << QRect(0, 512, 100, 10);
    QTest::newRow("top left") << QSize(1280, 1024) << QPoint(-100, -100) << QSize(100, 100) << QPoint(50, 50) << QRect(0, 0, 100, 100);
    QTest::newRow("bottom left") << QSize(1280, 1024) << QPoint(-100, 0) << QSize(100, 100) << QPoint(50, 1000) << QRect(0, 924, 100, 100);
}

void TransientPlacementTest::testSimplePosition()
{
    // this test verifies that the position of a transient window is taken from the passed position
    // there are no further constraints like window too large to fit screen, cascading transients, etc
    // some test cases also verify that the transient fits on the screen
    QFETCH(QSize, parentSize);
    AbstractClient *parent = showWlShellWindow(parentSize);
    QVERIFY(parent->clientPos().isNull());
    QVERIFY(!parent->isDecorated());
    QFETCH(QPoint, parentPosition);
    parent->move(parentPosition);
    QFETCH(QSize, transientSize);
    QFETCH(QPoint, transientOffset);
    AbstractClient *transient = showWlShellWindow(transientSize, false, surfaceForClient(parent), transientOffset);
    QVERIFY(transient);
    QVERIFY(!transient->isDecorated());
    QVERIFY(transient->hasTransientPlacementHint());
    QTEST(transient->geometry(), "expectedGeometry");
}

void TransientPlacementTest::testDecorationPosition_data()
{
    QTest::addColumn<QSize>("parentSize");
    QTest::addColumn<QPoint>("parentPosition");
    QTest::addColumn<QSize>("transientSize");
    QTest::addColumn<QPoint>("transientOffset");
    QTest::addColumn<QRect>("expectedGeometry");

    QTest::newRow("0/0") << QSize(640, 512) << QPoint(0, 0) << QSize(10, 100) << QPoint(0, 0) << QRect(0, 0, 10, 100);
    QTest::newRow("bottomRight") << QSize(640, 512) << QPoint(0, 0) << QSize(10, 100) << QPoint(639, 511) << QRect(639, 511, 10, 100);
    QTest::newRow("offset") << QSize(640, 512) << QPoint(200, 300) << QSize(100, 10) << QPoint(320, 256) << QRect(520, 556, 100, 10);
}

void TransientPlacementTest::testDecorationPosition()
{
    // this test verifies that a transient window is correctly placed if the parent window has a
    // server side decoration
    QFETCH(QSize, parentSize);
    AbstractClient *parent = showWlShellWindow(parentSize, true);
    QVERIFY(!parent->clientPos().isNull());
    QVERIFY(parent->isDecorated());
    QFETCH(QPoint, parentPosition);
    parent->move(parentPosition);
    QFETCH(QSize, transientSize);
    QFETCH(QPoint, transientOffset);
    AbstractClient *transient = showWlShellWindow(transientSize, false, surfaceForClient(parent), transientOffset);
    QVERIFY(transient);
    QVERIFY(!transient->isDecorated());
    QVERIFY(transient->hasTransientPlacementHint());
    QFETCH(QRect, expectedGeometry);
    expectedGeometry.translate(parent->clientPos());
    QCOMPARE(transient->geometry(), expectedGeometry);
}

void TransientPlacementTest::testXdgPopup_data()
{
    using namespace KWayland::Client;

    QTest::addColumn<QSize>("parentSize");
    QTest::addColumn<QPoint>("parentPosition");
    QTest::addColumn<XdgPositioner>("positioner");
    QTest::addColumn<QRect>("expectedGeometry");

    // window in the middle, plenty of room either side: Changing anchor

    // parent window is 500,500, starting at 300,300, anchorRect is therefore between 350->750 in both dirs
    XdgPositioner positioner(QSize(200,200), QRect(50,50, 400,400));
    positioner.setGravity(Qt::BottomEdge | Qt::RightEdge);

    positioner.setAnchorEdge(Qt::Edges());
    QTest::newRow("anchorCentre") << QSize(500, 500) << QPoint(300,300) << positioner << QRect(550, 550, 200, 200);
    positioner.setAnchorEdge(Qt::TopEdge | Qt::LeftEdge);
    QTest::newRow("anchorTopLeft") << QSize(500, 500) << QPoint(300,300) << positioner << QRect(350,350, 200, 200);
    positioner.setAnchorEdge(Qt::TopEdge);
    QTest::newRow("anchorTop") << QSize(500, 500) << QPoint(300,300) << positioner << QRect(550, 350, 200, 200);
    positioner.setAnchorEdge(Qt::TopEdge | Qt::RightEdge);
    QTest::newRow("anchorTopRight") << QSize(500, 500) << QPoint(300,300) << positioner << QRect(750, 350, 200, 200);
    positioner.setAnchorEdge(Qt::RightEdge);
    QTest::newRow("anchorRight") << QSize(500, 500) << QPoint(300,300) << positioner << QRect(750, 550, 200, 200);
    positioner.setAnchorEdge(Qt::BottomEdge | Qt::RightEdge);
    QTest::newRow("anchorBottomRight") << QSize(500,500) << QPoint(300,300) << positioner << QRect(750, 750, 200, 200);
    positioner.setAnchorEdge(Qt::BottomEdge);
    QTest::newRow("anchorBottom") << QSize(500, 500) << QPoint(300,300) << positioner << QRect(550, 750, 200, 200);
    positioner.setAnchorEdge(Qt::BottomEdge | Qt::LeftEdge);
    QTest::newRow("anchorBottomLeft") << QSize(500, 500) << QPoint(300,300) << positioner << QRect(350, 750, 200, 200);
    positioner.setAnchorEdge(Qt::LeftEdge);
    QTest::newRow("anchorLeft") << QSize(500, 500) << QPoint(300,300) << positioner << QRect(350, 550, 200, 200);

    // ----------------------------------------------------------------
    // window in the middle, plenty of room either side: Changing gravity around the bottom right anchor
    positioner.setAnchorEdge(Qt::BottomEdge | Qt::RightEdge);
    positioner.setGravity(Qt::Edges());
    QTest::newRow("gravityCentre") << QSize(500, 500) << QPoint(300, 300) << positioner << QRect(650, 650, 200, 200);
    positioner.setGravity(Qt::TopEdge | Qt::LeftEdge);
    QTest::newRow("gravityTopLeft") << QSize(500, 500) << QPoint(300, 300) << positioner << QRect(550, 550, 200, 200);
    positioner.setGravity(Qt::TopEdge);
    QTest::newRow("gravityTop") << QSize(500, 500) << QPoint(300, 300) << positioner << QRect(650, 550, 200, 200);
    positioner.setGravity(Qt::TopEdge | Qt::RightEdge);
    QTest::newRow("gravityTopRight") << QSize(500, 500) << QPoint(300, 300) << positioner << QRect(750, 550, 200, 200);
    positioner.setGravity(Qt::RightEdge);
    QTest::newRow("gravityRight") << QSize(500, 500) << QPoint(300, 300) << positioner << QRect(750, 650, 200, 200);
    positioner.setGravity(Qt::BottomEdge | Qt::RightEdge);
    QTest::newRow("gravityBottomRight") << QSize(500, 500) << QPoint(300, 300) << positioner << QRect(750, 750, 200, 200);
    positioner.setGravity(Qt::BottomEdge);
    QTest::newRow("gravityBottom") << QSize(500, 500) << QPoint(300, 300) << positioner << QRect(650, 750, 200, 200);
    positioner.setGravity(Qt::BottomEdge | Qt::LeftEdge);
    QTest::newRow("gravityBottomLeft") << QSize(500, 500) << QPoint(300, 300) << positioner << QRect(550, 750, 200, 200);
    positioner.setGravity(Qt::LeftEdge);
    QTest::newRow("gravityLeft") << QSize(500, 500) << QPoint(300, 300) << positioner << QRect(550, 650, 200, 200);

    // ----------------------------------------------------------------
    //constrain and slide
    //popup is still 200,200. window moved near edge of screen, popup always comes out towards the screen edge
    positioner.setConstraints(XdgPositioner::Constraint::SlideX | XdgPositioner::Constraint::SlideY);

    positioner.setAnchorEdge(Qt::TopEdge);
    positioner.setGravity(Qt::TopEdge);
    QTest::newRow("constraintSlideTop") << QSize(500, 500) << QPoint(80, 80) << positioner << QRect(80 + 250 - 100, 0, 200, 200);

    positioner.setAnchorEdge(Qt::LeftEdge);
    positioner.setGravity(Qt::LeftEdge);
    QTest::newRow("constraintSlideLeft") << QSize(500, 500) << QPoint(80, 80) << positioner << QRect(0, 80 + 250 - 100, 200, 200);

    positioner.setAnchorEdge(Qt::RightEdge);
    positioner.setGravity(Qt::RightEdge);
    QTest::newRow("constraintSlideRight") << QSize(500, 500) << QPoint(700, 80) << positioner << QRect(1280 - 200, 80 + 250 - 100, 200, 200);

    positioner.setAnchorEdge(Qt::BottomEdge);
    positioner.setGravity(Qt::BottomEdge);
    QTest::newRow("constraintSlideBottom") << QSize(500, 500) << QPoint(80, 500) << positioner << QRect(80 + 250 - 100, 1024 - 200, 200, 200);

    positioner.setAnchorEdge(Qt::BottomEdge | Qt::RightEdge);
    positioner.setGravity(Qt::BottomEdge| Qt::RightEdge);
    QTest::newRow("constraintSlideBottomRight") << QSize(500, 500) << QPoint(700, 1000) << positioner << QRect(1280 - 200, 1024 - 200, 200, 200);


    // ----------------------------------------------------------------
    // constrain and flip
    positioner.setConstraints(XdgPositioner::Constraint::FlipX | XdgPositioner::Constraint::FlipY);

    positioner.setAnchorEdge(Qt::TopEdge);
    positioner.setGravity(Qt::TopEdge);
    QTest::newRow("constraintFlipTop") << QSize(500, 500) << QPoint(80, 80) << positioner << QRect(230, 80 + 500 - 50, 200, 200);

    positioner.setAnchorEdge(Qt::LeftEdge);
    positioner.setGravity(Qt::LeftEdge);
    QTest::newRow("constraintFlipLeft") << QSize(500, 500) << QPoint(80, 80) << positioner << QRect(80 + 500 - 50, 230, 200, 200);

    positioner.setAnchorEdge(Qt::RightEdge);
    positioner.setGravity(Qt::RightEdge);
    QTest::newRow("constraintFlipRight") << QSize(500, 500) << QPoint(700, 80) << positioner << QRect(700 + 50 - 200, 230, 200, 200);

    positioner.setAnchorEdge(Qt::BottomEdge);
    positioner.setGravity(Qt::BottomEdge);
    QTest::newRow("constraintFlipBottom") << QSize(500, 500) << QPoint(80, 500) << positioner << QRect(230, 500 + 50 - 200, 200, 200);

    positioner.setAnchorEdge(Qt::BottomEdge | Qt::RightEdge);
    positioner.setGravity(Qt::BottomEdge| Qt::RightEdge);
    QTest::newRow("constraintFlipBottomRight") << QSize(500, 500) << QPoint(700, 500) << positioner << QRect(700 + 50 - 200, 500 + 50 - 200, 200, 200);

    positioner.setAnchorEdge(Qt::TopEdge);
    positioner.setGravity(Qt::RightEdge);
    //as popup is positioned in the middle of the parent we need a massive popup to be able to overflow
    positioner.setInitialSize(QSize(400, 400));
    QTest::newRow("constraintFlipRightNoAnchor") << QSize(500, 500) << QPoint(700, 80) << positioner << QRect(700 + 250 - 400, 330, 400, 400);

    positioner.setAnchorEdge(Qt::RightEdge);
    positioner.setGravity(Qt::TopEdge);
    positioner.setInitialSize(QSize(300, 200));
    QTest::newRow("constraintFlipRightNoGravity") << QSize(500, 500) << QPoint(700, 80) << positioner << QRect(700 + 50 - 150, 130, 300, 200);
}

void TransientPlacementTest::testXdgPopup()
{
    using namespace KWayland::Client;

    // this test verifies that the position of a transient window is taken from the passed position
    // there are no further constraints like window too large to fit screen, cascading transients, etc
    // some test cases also verify that the transient fits on the screen
    QFETCH(QSize, parentSize);

    //create parent
    Surface *surface = Test::createSurface(Test::waylandCompositor());
    QVERIFY(surface);
    auto parentShellSurface = Test::createXdgShellStableSurface(surface, Test::waylandCompositor());
    QVERIFY(parentShellSurface);
    auto parent = Test::renderAndWaitForShown(surface, parentSize, Qt::blue);
    QVERIFY(parent);

    QVERIFY(!parent->isDecorated());
    QFETCH(QPoint, parentPosition);
    parent->move(parentPosition);

    //create popup
    QFETCH(XdgPositioner, positioner);

    Surface *transientSurface = Test::createSurface(Test::waylandCompositor());
    QVERIFY(transientSurface);

    Test::createXdgShellStablePopup(transientSurface, parentShellSurface, positioner, Test::waylandCompositor());
    auto transient = Test::renderAndWaitForShown(transientSurface, positioner.initialSize(), Qt::red);
    QVERIFY(transient);

    QVERIFY(!transient->isDecorated());
    QVERIFY(transient->hasTransientPlacementHint());
    QTEST(transient->geometry(), "expectedGeometry");
}

}

WAYLANDTEST_MAIN(KWin::TransientPlacementTest)
#include "transient_placement.moc"